Fire clay is a flexible flame retardant material, the flame arrester, blocking smoke performance, it is oil-resistant, water-resistant, corrosion-resistant, mainly used for cable plugging the holes to prevent fire spread to the neighboring room fire holes to reduce the risk of fire losses. Which is widely used in industrial and mining enterprises, high-rise buildings and systems engineering cable holes plugging. Fire clay, blocking mud. Usage: kneading evenly embedded holes (cold weather hard at blocking material can be heated in warm water about 50 degrees, you can use a little soft). Fire resistance of greater than or equal to 3 hours. Fire blocking materials, blocking mud, Shanghai fire prevention mud. Welcome new and old customers!